/*
 * Galaxium Messenger
 * 
 * Copyright (C) 2007 Philippe Durand <draekz@gmail.com>
 * 
 * License: GNU General Public License (GPL)
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

using System;
using System.Collections.Generic;

using Gtk;
using Gdk;

using Galaxium.Gui.GtkGui;
using Galaxium.Gui;
using Galaxium.Core;

namespace Galaxium.Protocol.Aim.GtkGui
{
	public sealed class GroupTreeNodeBuilder : ITreeNodeBuilder<HintTreeNodeRenderer>
	{
		public string ContextMenuExtensionPoint
		{
			get { return "/Galaxium/Gui/AIM/ContactTree/ContextMenu/Group"; }
		}
		
		public void BuildDynamicChildNodes (TreeNodeContext context)
		{
			AimGroup group = context.NodeObject as AimGroup;
			AimAccount account = group.Session.Account as AimAccount;
			
			if (group.UniqueIdentifier == "offline") {
				//this is the special virtual group for offline contacts -> add all contacts
				foreach (AimContact contact in group)
					context.TreeBuilder.AddNode (context.Node, contact);
			} else {
				foreach (AimContact contact in group) {
					if (account.GroupOfflineContacts)
						continue;
					else if (!account.ShowOfflineContacts && contact.Presence == AimPresence.Offline)
						continue;
					context.TreeBuilder.AddNode (context.Node, contact);
				}
			}
		}
		
		public bool HasDynamicChildNodes (TreeNodeContext context)
		{
			AimGroup group = context.NodeObject as AimGroup;
			return group.Count > 0;
		}

		public Type NodeType
		{
			get { return typeof (AimGroup); }
		}

		public void RenderIcon (TreeNodeContext context, HintTreeNodeRenderer renderer, ITreeNodeWidget widget)
		{
			DefaultTreeNodeWidget nodeWidget = widget as DefaultTreeNodeWidget;
			if (nodeWidget != null)
			{
				CellRendererPixbuf cell = nodeWidget.GetPixbufRenderer ();
				
				if (cell != null)
					renderer.RenderIcon (cell, null, true);
			}
		}

		public void RenderText (TreeNodeContext context, HintTreeNodeRenderer renderer, ITreeNodeWidget widget)
		{
			DefaultTreeNodeWidget nodeWidget = widget as DefaultTreeNodeWidget;
			if (nodeWidget != null) {
				ContactCellRendererText cell = (ContactCellRendererText)nodeWidget.GetTextRenderer ();
				if (cell != null) {
					AimGroup group = context.NodeObject as AimGroup;
					string text = null;
					if (group.IsVirtual && group.UniqueIdentifier != "0") //"0" == "Other contacts" virtual group
						text = String.Concat ("<b>", group.Name, "</b> (", group.Count, ")");
					else
						text = String.Concat ("<b>", group.Name, "</b> (", group.OnlineCount, "/", group.Count, ")");
					renderer.RenderText (cell, text, true);
					cell.Markup = text;
				}
			}
		}

		public void NodeActivated (TreeNodeContext context)
		{
		}

		public string GetComparableContent (TreeNodeContext context)
		{
			return (context.NodeObject as AimGroup).Name;
		}
	}
}